Zuul
5 years ago
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Gerrit Code Review
commit
d13957dc5e
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=============
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fedora-atomic
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=============
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Generates a Fedora Atomic image based on a public deployed tree. This element has been tested under Debian, Ubuntu, CentOS and Fedora operating systems.
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Pre-requisites to run diskimage-builder
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---------------------------------------
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For diskimage-builder to work, following packages need to be
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present:
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* python-dev
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* build-essential
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* python-pip
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* kpartx
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* python-lzma
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* qemu-utils
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* yum
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* yum-utils
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* python-yaml
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* curl
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For Debian/Ubuntu systems, use::
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apt-get install python-dev build-essential python-pip kpartx python-lzma \
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qemu-utils yum yum-utils python-yaml git curl
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For CentOS and Fedora < 22, use::
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yum install python-dev build-essential python-pip kpartx python-lzma qemu-utils yum yum-utils python-yaml curl
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For Fedora >= 22, use::
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dnf install python-devel @development-tools python-pip kpartx python-backports-lzma @virtualization yum yum-utils python-yaml curl
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How to generate Fedora Atomic image
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-----------------------------------
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To generate an atomic image for Fedora 25 these commands can be
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executed::
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# Install diskimage-builder in virtual environment
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virtualenv .
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. bin/activate
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pip install diskimage-builder
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git clone https://git.openstack.org/openstack/magnum
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git clone https://git.openstack.org/openstack/dib-utils.git
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export PATH="${PWD}/dib-utils/bin:$PATH"
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export ELEMENTS_PATH=$(python -c 'import os, diskimage_builder, pkg_resources;print(os.path.abspath(pkg_resources.resource_filename(diskimage_builder.__name__, "elements")))')
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export ELEMENTS_PATH="${ELEMENTS_PATH}:${PWD}/magnum/magnum/drivers/common/image"
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export DIB_RELEASE=25 # this can be switched to the desired version
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export DIB_IMAGE_SIZE=2.5 # we need to give a bit more space to loopback device
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disk-image-create fedora-atomic -o fedora-atomic
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This element can consume already published trees, but you can use it
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to consume your own generated trees. Documentation about creating own trees
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can be found at `http://developers.redhat.com/blog/2015/01/08/creating-custom-atomic-trees-images-and-installers-part-1/ <http://developers.redhat.com/blog/2015/01/08/creating-custom-atomic-trees-images-and-installers-part-1/>`_
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Environment Variables
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---------------------
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To properly reference the tree, the following env vars can be set:
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FEDORA_ATOMIC_TREE_URL
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:Required: Yes
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:Description: Url for the public fedora-atomic tree to use. It can
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reference to own published trees.
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:Default: ``https://kojipkgs.fedoraproject.org/atomic/${DIB_RELEASE}/``
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FEDORA_ATOMIC_TREE_REF
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:Required: Yes
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:Description: Reference of the tree to install.
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:Default: ``$(curl ${FEDORA_ATOMIC_TREE_URL}/refs/heads/fedora-atomic/${DIB_RELEASE}/x86_64/docker-host)``
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You can use the defaults or export your url and reference, like following::
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export FEDORA_ATOMIC_TREE_URL="https://kojipkgs.fedoraproject.org/atomic/25/"
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export FEDORA_ATOMIC_TREE_REF="$(curl https://kojipkgs.fedoraproject.org/atomic/25/refs/heads/fedora-atomic/25/x86_64/docker-host)"
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@ -1,4 +0,0 @@
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fedora-minimal
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growroot
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package-installs
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vm
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export FEDORA_ATOMIC_TREE_URL=${FEDORA_ATOMIC_TREE_URL:-https://kojipkgs.fedoraproject.org/atomic/${DIB_RELEASE}/}
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export FEDORA_ATOMIC_TREE_REF=${FEDORA_ATOMIC_TREE_REF:-$(curl ${FEDORA_ATOMIC_TREE_URL}/refs/heads/fedora-atomic/${DIB_RELEASE}/x86_64/docker-host)}
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#!/bin/bash
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if [ ${DIB_DEBUG_TRACE:-0} -gt 0 ]; then
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set -x
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fi
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set -eu
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set -o pipefail
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# generate ostree in root
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cd /
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ostree admin os-init fedora-atomic
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ostree remote add --set=gpg-verify=false fedora-atomic ${FEDORA_ATOMIC_TREE_URL}
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ostree pull fedora-atomic ${FEDORA_ATOMIC_TREE_REF}
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ostree remote delete fedora-atomic
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ostree admin deploy --os=fedora-atomic ${FEDORA_ATOMIC_TREE_REF} --karg-proc-cmdline --karg=selinux=0
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# copy /etc/fstab to the deployed directory
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SYSROOT=/ostree/deploy/fedora-atomic/deploy/${FEDORA_ATOMIC_TREE_REF}.0
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cp /etc/fstab $SYSROOT/etc/
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# need to find the generated images
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DEPLOYED_DIRECTORY=$(find /boot/ostree -name fedora-atomic-* -type d)
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DEPLOYED_ID=${DEPLOYED_DIRECTORY##*-}
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INIT_IMAGE=$(find ${DEPLOYED_DIRECTORY} -name initramfs*.img)
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VMLINUZ_IMAGE=$(find ${DEPLOYED_DIRECTORY} -name vmlinuz*)
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# generate ostree boot
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cat > /etc/grub.d/15_ostree <<EOF
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cat <<EOL
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menuentry 'Fedora ${DIB_RELEASE} (ostree)' --class gnu-linux --class gnu --class os --unrestricted "ostree-0-${DIB_IMAGE_ROOT_FS_UUID}" {
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set gfxpayload=text
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insmod gzio
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insmod part_msdos
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insmod ext2
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search --no-floppy --set=root --label ${DIB_ROOT_LABEL}
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linux16 ${VMLINUZ_IMAGE} root=LABEL=${DIB_ROOT_LABEL} ro nofb nomodeset vga=normal console=tty0 console=ttyS0,115200 no_timer_check rd.shell=0 ostree=/ostree/boot.1/fedora-atomic/${DEPLOYED_ID}/0
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initrd16 ${INIT_IMAGE}
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}
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EOL
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EOF
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chmod +x /etc/grub.d/15_ostree
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# start cloud-init on boot
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ln -sf $SYSROOT/usr/lib/systemd/system/cloud-config.service $SYSROOT/etc/systemd/system/multi-user.target.wants/cloud-config.service
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ln -sf $SYSROOT/usr/lib/systemd/system/cloud-final.service $SYSROOT/etc/systemd/system/multi-user.target.wants/cloud-final.service
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ln -sf $SYSROOT/usr/lib/systemd/system/cloud-init.service $SYSROOT/etc/systemd/system/multi-user.target.wants/cloud-init.service
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ln -sf $SYSROOT/usr/lib/systemd/system/cloud-init-local.service $SYSROOT/etc/systemd/system/multi-user.target.wants/cloud-init-local.service
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# disabled docker-storage-setup
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rm $SYSROOT/etc/systemd/system/multi-user.target.wants/docker-storage-setup.service
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# remove previous entry and generate config
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rm /etc/grub.d/10_linux
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grub2-mkconfig -o /boot/grub2/grub.cfg
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# remove non usable images
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rm -rf /boot/vmlinuz*
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rm -rf /boot/initramfs*
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# image cleanup
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if [ $DIB_RELEASE -ge 22 ]; then
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dnf -y remove dracut grubby kernel initscript man-pages redhat-lsb-core selinux-policy selinux-policy-targeted
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dnf autoremove
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dnf clean all
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else
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yum -y remove dracut grubby kernel initscript man-pages redhat-lsb-core selinux-policy selinux-policy-targeted
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yum autoremove
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yum clean all
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fi
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@ -1,22 +0,0 @@
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#!/bin/bash
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# This script installs all needed dependencies to generate
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# images using diskimage-builder. Please not it only has been
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# tested on Ubuntu Trusty
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set -eux
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set -o pipefail
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sudo apt-get update || true
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sudo apt-get install -y \
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debootstrap \
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kpartx \
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qemu-utils \
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python-dev \
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build-essential \
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python-pip \
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python-lzma \
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yum \
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yum-utils \
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python-yaml \
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curl
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# Install packages needed for atomic
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ostree:
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#!/bin/bash
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#
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# Copyright (c) 2016 Hewlett-Packard Development Company, L.P.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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set -e
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# check that image is valid
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qemu-img check -q $1
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# validate estimated size
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FILESIZE=$(stat -c%s "$1")
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MIN_SIZE=629145600 # 600MB
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if [ $FILESIZE -lt $MIN_SIZE ] ; then
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echo "Error: generated image size is lower than expected."
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exit 1
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fi
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